Fix posix violation in grml-live-remaster

[grml-live.git] / remaster / grml-live-remaster

diff --git a/remaster/grml-live-remaster b/remaster/grml-live-remaster
index 11739c8..456dbab 100755 (executable)
--- a/remaster/grml-live-remaster
+++ b/remaster/grml-live-remaster
@@ -1,18 +1,28 @@
 #!/bin/sh
 # Filename:      grml-live-remaster
 # Purpose:       remaster a grml from the live cd
-# Authors:       grml-team (grml.org), (c) Michael Schierl <schierlm@gmx.de>, (c) Michael Prokop <mika@grml.org>
+# Authors:       grml-team (grml.org),
+#                (c) Michael Schierl <schierlm@gmx.de>,
+#                (c) Michael Prokop <mika@grml.org>,
+#                (c) Thorsten Glaser <tg@mirbsd.org>
 # Bug-Reports:   see http://grml.org/bugs/
 # License:       This file is licensed under the GPL v2 or any later version.
-# Latest change: Fri Dec 28 00:59:13 CET 2007 [mika]
 ################################################################################
 # DISCLAIMER:
-# this script currently lacks lots of error checking code... any help welcome...
+# this script currently lacks LOTS of error checking code... any help welcome...
 ################################################################################
 
+# define function getfilesize before "set -e"
+if stat --help >/dev/null 2>&1; then
+  getfilesize='stat -c %s'      # GNU stat
+else
+  getfilesize='stat -f %z'      # BSD stat
+fi
+
 set -e # exit on any error
 
-VERSION='0.0.1'
+VERSION='0.0.2'
+GRML_LIVE_EDITOR=${VISUAL:-${EDITOR:-vi}}
 
 # source core functions {{{
 . /etc/grml/lsb-functions
@@ -20,7 +30,19 @@ VERSION='0.0.1'
 # }}}
 
 # make sure we have what we need {{{
-check4progs mkisofs mksquashfs || exit 1
+check4progs mkisofs stat || exit 1
+
+# allow overriding via environment:
+if [ -z "$MKSQUASHFS" ] ; then
+  if which mksquashfs-lzma >/dev/null 2>&1 ; then
+    MKSQUASHFS=mksquashfs-lzma
+  elif which mksquashfs >/dev/null 2>&1 ; then
+    MKSQUASHFS=mksquashfs
+  else
+    echo "Error: neither mksquashfs-lzma nor mksquashfs present. Exiting."
+    exit 1
+  fi
+fi
 check4root || exit 1
 # }}}
 
@@ -33,7 +55,7 @@ if [ x"$1" == x ]; then
    echo "  first, because grml-live-remaster will need a lot ot RAM."
    echo ""
    echo "Please report bugs and feature requests: http://grml.org/bugs/"
-   exit -1
+   exit 1
 fi
 
 if [ ! -d /remaster ]; then
@@ -42,11 +64,21 @@ if [ ! -d /remaster ]; then
    echo "#:# edit the following two lines to change the boot message" \
            >/remaster/msg
    echo "#:#" >>/remaster/msg
-   sed 1,2d /live/image/boot/isolinux/boot.msg >>/remaster/msg
+   if [ -r /live/image/boot/isolinux/boot.msg ] ; then
+      sed 1,2d /live/image/boot/isolinux/boot.msg >>/remaster/msg
+   else
+      sed 1,2d /live/image/boot.msg >>/remaster/msg
+   fi
+fi
+
+SQUASHFS_FILE="$(find /live/image/live -name \*.squashfs | head -1)"
+if ! grep -q "/remaster/cdrom squashfs" /proc/mounts ;  then
+   mount -t squashfs "$SQUASHFS_FILE" /remaster/cdrom -o ro,loop
 fi
 
-mount -t squashfs /live/image/live/grml.squashfs /remaster/cdrom -o ro,loop
-mount -t aufs aufs /remaster/chroot -o br:/remaster/tmp=rw:/remaster/cdrom=rr
+if ! grep -q "aufs /remaster/chroot" /proc/mounts ; then
+   mount -t aufs aufs /remaster/chroot -o br:/remaster/tmp=rw:/remaster/cdrom=rr
+fi
 
 for i in dev proc root sys tmp; do
     mount --bind /$i /remaster/chroot/$i
@@ -59,28 +91,57 @@ for i in dev proc root sys tmp; do
         umount /remaster/chroot/$i
 done
 
-$EDITOR /remaster/msg
+${GRML_LIVE_EDITOR} /remaster/msg
+
+[ -d /remaster/iso ] || mkdir /remaster/iso
 
-mkdir /remaster/iso
 for i in /live/image/*; do
     if [ ! $i == /live/image/live ]; then
        cp -R $i /remaster/iso
     fi
 done
 
-rm /remaster/iso/boot/isolinux/boot.msg
-sed 3,4d /live/image/boot/isolinux/boot.msg \
+if [ -r /remaster/iso/boot/isolinux/boot.msg ] ; then
+   rm /remaster/iso/boot/isolinux/boot.msg
+fi
+
+# make sure we support usb sticks as well:
+if [ -d /live/image/boot/isolinux ] ; then
+   BOOTSTUFF=/live/image/boot/isolinux
+else
+   BOOTSTUFF=/live/image
+fi
+
+[ -d /remaster/iso/boot/isolinux ] || mkdir -p /remaster/iso/boot/isolinux
+
+sed 3,4d "${BOOTSTUFF}"/boot.msg \
         >/remaster/iso/boot/isolinux/boot.msg
 sed 1,2d /remaster/msg >>/remaster/iso/boot/isolinux/boot.msg
 
 mkdir /remaster/iso/live
-mksquashfs /remaster/chroot /remaster/iso/live/grml.squashfs
+$MKSQUASHFS /remaster/chroot /remaster/iso/live/"$(basename $SQUASHFS_FILE)"
 umount /remaster/chroot /remaster/cdrom
 
-mkisofs -b boot/isolinux/isolinux.bin -no-emul-boot -c boot/isolinux/boot.cat \
-        -boot-info-table -l -r -J -o "$1" /remaster/iso
+if [ -f /remaster/iso/boot/isolinux/isolinux.bin ] ; then
+   ISOLINUX=boot/isolinux/isolinux.bin
+   ISOLINUX_BOOTCAT=boot/isolinux/boot.cat
+else
+   ISOLINUX=isolinux.bin
+   ISOLINUX_BOOTCAT=boot.cat
+fi
+
+mkisofs -b $ISOLINUX -no-emul-boot -c $ISOLINUX_BOOTCAT \
+        -boot-info-table -boot-load-size 4 -no-pad \
+        -l -r -J -o "$1" /remaster/iso
+# pad for partition table
+siz=$($getfilesize "$1")
+cyls=$((siz / 512 / 32 / 16 + 1))       # C=$cyls H=16 S=32 (= 256 KiB units)
+siz=$((cyls * 16 * 32 * 512))           # size after padding
+dd if=/dev/zero bs=1 count=1 seek=$((siz - 1)) of="$1" 2>/dev/null
 rm -R /remaster/iso
 
+# here is the place where we could apply bootgrub.mksh
+
 echo ""
 echo "ISO generation complete:"
 ls --color -l "$1"